This morning the heating failed to come on. Initially I thought the boiler was the problem, yet the pilot light is still on.
The Drayton Tempus seven still has its two lights on, but is unable to fire up the system.

My question is, is it likely that its the programmer at fault and not the boiler and by simply replacing the Tempus seven, will solve the problem ?

Thanks
Richard

Richard Addis, December 2008

I had the same problem with a Tempus 3.
I thought it was the zone valve that had gone wrong.
It turned out that the programmer was showing the heating to be on but it wasn't telling the valve (no live feed to valve).

JohnK, January 2009

do the motorised valves move when heating is called for

b, December 2008